3m Innovative Properties Company

Jianhui Xia

Albert I Everaerts

Ying-Yuh Lu

Lang N Nguyen

Mark F Ellis

Audrey A Sherman

Thomas P Klun

Encai Hao

Jason D Clapper

Karl E Benson

Lan Hong Liu

Ross E Behling

Peter M Olofson

Babu Nana Gaddam

Kevin Michael Lewandowski

David B Olson

Duane Douglas Fansler

Douglas Scott Dunn

Sheng Ye

Joseph D Rule

Marc Dudley Radcliffe

Kui Chen-Ho

Jun-Ying Zhang

Yongshang Lu

Dong-Wei Zhu

Eugene G Joseph

Mark D Purgett

David James Yarusso

Richard B Ross

David T Amos

Zhiming Zhou

Jingjing Ma

Vivek Bharti

David A Kowitz

Chun-Yi Ting

Timothy D Filiatrault

Feng Bai

Christopher K Haas

Kiu-Yuen Tse

Francois C D'Haese

JingJing Ma

Ashish Kumar Khandpur

Randy A Larson

Lili Qie

Shijing Cheng

Ming Cheng

Roy A Auerbach

John E Duncan

Michael W O'Keefe

Andrew Satrijo

Domasius Nwabunma

Charlie Chia-Tie Ho

Christopher R Boyer

Aaron D Montello

Lauren A Polski

Wanshik Yoon

Lang Nguyen

Francois C D'HAESE

Michael W O'KEEFE

There is provided a pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of a polyisocyanate component and a polyol component. The polyol component has a hydrophilic-lipophilic balance (HLB) less than 10. The polyurethane further comprises 0.5 to 10 wt.-% of hydrophilic polymerized units having an HLB greater than 12, such as a reaction product of a polyethylene glycol polymer. In another embodiment, the polyurethane further comprises pendent ethylenically unsaturated groups. Also described are articles such as laminating tapes and protective films as well as methods of bonding substrates with the pressure sensitive adhesive and laminating tape.

Polyurethane adhesive with chemical resistant

Curable adhesive compositions are provided that can be cured using ultraviolet or visible light radiation. These curable adhesive compositions, which contain a curable (meth)acrylate copolymer, have a creep compliance that is less than 5(10) inverse Pascals at 25&#xb0; C., a creep compliance that is greater than 1(10) inverse Pascals at 70&#xb0; C., and a shear storage modulus greater than 40 kiloPascals when measured at 25&#xb0; C. at a frequency of 1 radian/second.

Curable and cured adhesive compositions

The present invention is an optically clear, curable adhesive including a polyvinylbutyral, a polyurethane (meth)acrylate, a (meth)acrylate monomer, and a photoinitiator. The polyvinylbutyral has a dynamic viscosity of between about 9 and about 13 mPa&#xb7;s and a polyvinyl alcohol weight percent of less than about 18%. The polyurethane (meth)acrylate includes the reaction product of a diol, at least one diisocyanate, and a hydroxyfunctional (meth)acrylate or an isocyanatofunctional (meth)acrylate. When the optically clear, curable adhesive is placed between two transparent substrates and made into a laminate, the laminate has a haze of less than about 6%, a transmission of greater than about 88%, and an optical clarity of greater than about 98% when cured. The optically clear, curable adhesive also has a peel adhesion of at least about 100 g/cm based on ASTM 3330 when cured.

High performance photocurable optically clear adhesive

The present invention is an optically clear, curable adhesive including a polyvinylbutyral, a polyurethane (meth)acrylate, and a photoinitiator. The polyvinylbutyral has a dynamic viscosity of between about 9 and about 13 mPa&#xb7;s and a polyvinyl alcohol weight percent of less than about 18%. The polyurethane (meth)acrylate includes the reaction product of a diol, at least one diisocyanate, and a hydroxyfunctional (meth)acrylate or an isocyanatofunctional (meth)acrylate. When the optically clear, curable adhesive is placed between two transparent substrates and made into a laminate, the laminate has a haze of less than about 6%, a transmission of greater than about 88% and an optical clarity of greater than about 98% when cured. The optically clear, curable adhesive also has a peel adhesion of at least about 100 g/cm based on ASTM 3330 when cured.

The present disclosure provides a crosslinkable composition including a (meth)acrylate polymer and a visible light absorbing compound. Two percent or less of the carbon-carbon bonds in the crosslinkable composition are double bonds. The composition allows for inclusion of one or more materials degradable by ultraviolet radiation and/or stabilized against ultraviolet radiation. Methods for making a crosslinked composition is also provided. One method includes obtaining a crosslinkable composition and subjecting the crosslinkable composition to radiation having a wavelength of 400 nm or greater. Another method includes subjecting a crosslinkable composition to first and second radiations that are different from each other.

Crosslinkable composition including a (meth)acrylic polymer and methods of making a crosslinked composition

An adhesive composition includes an alkyl (meth)acrylate ester, wherein the alkyl group has 4 to 18 carbon atoms, a hydrophilic copolymerizable monomer and a free-radical generating initiator. The adhesive composition has a tan delta value of between about 0.5 and about 1.0 at a temperature of between about 25 C and about 100 C.

Optically clear adhesive, method of use and articles therefrom

Laser-personalizable security articles include a multi-layer security document and an optically transparent processing tape. The multi-layer security document includes an optically transparent cover layer, a composite image and an imagable layer adjacent to the cover layer. The first surface of the cover layer is at least partially a microstructured surface, where the microstructured surface forms microlenses or a lenticular surface. The composite image is made by a collection of complete or partial images viewed through the microstructured surface of the cover layer. The composite image is located on or within the second surface of the cover layer. The imagable layer is a laser. The optically transparent processing tape sufficiently wets out on the misconstructured surface to render the microstructured surface invisible to a writing laser.

Laser-personalizable security articles

Optically clear adhesives and laminates that include the adhesives are provided. The adhesives and laminates remain haze-free and are cloud point-resistant when placed in environments of high humidity and elevated temperature. The adhesives and laminates are useful in optical electronic display applications.

Cloud point-resistant adhesives and laminates

Articles are provided that include an optical film and an optically clear pressure sensitive adhesive layer on at least one outer surface of the optical film. Additionally, articles are provided that include a pressure sensitive adhesive layer that resists bubble formation when adhered to an outgassing substrate. The pressure sensitive adhesive layer in the various articles contain a (meth)acrylate block copolymer.

(Meth)acrylate block copolymer pressure sensitive adhesives

Described are adhesive compositions containing a mixture of a pressure sensitive adhesive, a high Tg polymer, and a crosslinker to form a compatibilized blend that is optically clear. Methods of using the adhesive compositions, and multilayer assemblies such as optical elements prepared using the adhesives, are also provided.

Adhesive blends, articles, and methods

A curable composition is provided comprising an oligomer having a plurality of pendent and/or terminal ethylenically unsaturated, free-radically polymerizable functional groups, a free-radically polymerizable crosslinking agent, and/or a diluent monomer, and a photoinitiator. The composition, when cured, is non-yellowing, exhibits low shrinkage and low birefringence making it suitable for many optical applications such as optical lenses, optical fibers, prisms, light guides, optical adhesives, and optical films.

Curable compositions for optical articles

Growing community of inventors

Woodbury, MN, United States of America

Jianhui Xia